Abstract
The emergence of video applications and video capable devices have
contributed substantially to the increase of video traffic on Internet.
New mechanisms recommending video rate adaptation towards delivering
enhanced Quality of Experience (QoE) at the same time making room for
more sessions. This paper introduces a cross-layer QoE-aware
architecture for video traffic over the Internet. It proposes that video
sources at the application layer adapt their rate to the network
environment by controlling their transmitted bit rate dynamically; and
the edge of network at the network layer protects the quality of the
active video sessions by controlling the acceptance of new session
through a video-aware admission control. In particular, it will seek the
most efficient way of accepting new video session and adapting
transmission rates to free up resources for more session while
maintaining the QoE of active sessions. The proposed framework will
contribute to the preparation for the extreme growth of video traffic in
the foreseeable future. Simulation results show that the proposed
cross-layer architecture guarantees the QoE for the admitted sessions
and utilizes the link more efficiently comparing to the rate adaptation
only architecture.